Thermofield Dynamics: Generalized Bogoliubov transformations and applications to Casimir effect

被引：1
|
作者：
Khanna, FC
Malbouisson, JMC
Santana, AE
机构：
[1] Univ Alberta, Inst Theoret Phys, Dept Phys, Edmonton, AB T6G 2J1, Canada
[2] Alberta T6G 2J1, Edmonton, AB T6G 2J1, Canada
[3] TRIUMF, Edmonton, AB T6G 2J1, Canada
[4] Univ Fed Bahia, Inst Fis, BR-40210 Salvador, BA, Brazil
[5] Univ Brasilia, Inst Fis, BR-70910 Brasilia, DF, Brazil
来源：
NON-LINEAR DYNAMICS AND FUNDAMENTAL INTERACTIONS | 2006年 / 213卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Thermofield Dynamics; Bogoliubov transformation; compactification; Casimir effect;
D O I：
10.1007/1-4020-3949-2_17
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Within the context of the Thermofield Dynamics, we introduce generalized Bogoliubov transformations which accounts simultaneously for spatial compactification and thermal effects. As a specific application of such a formalism, we consider the Casimir effect for Maxwell and Dirac fields at finite temperature. Particularly, we determine the temperature at which the Casimir pressure for a massless fermionic field in a cubic box changes its nature from attractive to repulsive. This critical temperature is approximately 100 MeV when the edge of the cube is of the order of the confining length (approximate to 1 fm) for baryons.
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页码：215 / +
页数：3
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